* {
  box-sizing: border-box;
}

ul {
  list-style-type: none;
  padding-left: 5px;
}

fieldset {
  width: 150px;
  display: inline-block;
}

button:hover {
  cursor: pointer;
}

button.disabled:hover {
  cursor: auto;
}

.disabled {
  color: gray;
}

button.start {
  width: 150px;
  height: 50px;
  font-size: 14pt;
}